The golden rule for chronic stuffy nose is steam inhalation. Inhaling steam from a bowl
of hot (but not boiling water) may help to soften, and loosen,
the build up
of mucus in your nose. You may also find that adding some menthol crystals, or eucalyptus oil, to the water, helps to ease your symptoms of catarrh.
These remedies should work for you. If the symptoms still persist then pls consult an ENT specialist.
Take care and do keep us posted on how you are doing.Kind regards.